I'm headed to Hawaii this spring with the wife and two young kids, and I'm trying to decide if I should break up the trip with a 3 night stop at Disneyland. Previously when we took our son, we really enjoyed that we could come and go between the parks and the Grand Californian, which really helped with a 17 month old who needed frequent breaks. Now that my daughter will be about 15 months old at the time of this trip, we'd like the same flexibility, but will this still work with the mandatory park reservations? Can I just reserve both parks for one day and come and go as we please as before, or does the reservation system lock us into a single park for a single day without the ability to re-enter? Without that flexibility, I don't think it would be worth our time and definitely not worth the money!